EP1444121A1 - Appui ressorts pour boggie - Google Patents
Appui ressorts pour boggieInfo
- Publication number
- EP1444121A1 EP1444121A1 EP02790543A EP02790543A EP1444121A1 EP 1444121 A1 EP1444121 A1 EP 1444121A1 EP 02790543 A EP02790543 A EP 02790543A EP 02790543 A EP02790543 A EP 02790543A EP 1444121 A1 EP1444121 A1 EP 1444121A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring support
- sole
- bogie
- longitudinal beam
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
Definitions
- the present invention relates to a bogie and more particularly a bogie intended to receive freight wagons.
- bogies of this type are classified into different categories according to the axle load that they are able to support. It is understood that, under these conditions, it is particularly advantageous to optimize the characteristics of mechanical resistance to the various stresses undergone by the bogie during its dynamic and static tests.
- freight transport wagons are usually supported by two bogies, each of which essentially consists of two longitudinal beams which are joined by two end crossmembers and a central crossmember.
- the bogies are supported by two end axles carrying the wheels which are themselves held by spring supports which connect them to the structure by means of suspension springs.
- the spring support which usually consists of a molded part, is fixed under each of the longitudinal beams by a weld bead, so that the latter which usually consists of an I-shaped profile, receives the spring support on its lower flange.
- the present invention thus relates to a bogie of the type whose structure consists essentially of two longitudinal beams made of mechanically welded, which are held by crosspieces, and whose cross section is I-shaped, that is to say -to say that it consists of an upper sole and a lower sole which are connected by a vertical core, this structure being in abutment at each of its ends on wheels mounted on axles held by integral spring supports of the structure, characterized in that each of the spring supports ends, at its upper part, with an element which constitutes at least the sole of the longitudinal beam on which it is fixed.
- At least the upper part of the spring support forming the sole located on the side of the center of the bogie extends longitudinally outwards beyond the rest of the spring support. It has been found that this form of implementation has the effect of increasing the resistance to the stresses undergone in the junction zone between the spring support and the longitudinal beam on which it is fixed.
- the spring support and its sole portion can, advantageously, be obtained by molding.
- Figure 1 is a partial side view of a bogie built according to the teaching of the invention.
- Figure 2 is a partial profile view, before assembly, of one end of a longitudinal beam of a bogie and a spring support intended to be fixed thereto, which comply with the provisions of prior art.
- Figure 3 is a partial profile view, before assembly, of one end of a longitudinal beam of a bogie and a spring support intended to be fixed thereon, which comply with the provisions of this invention.
- Figure 4 is a partial profile view before assembly of a longitudinal beam of a bogie and a spring support constituting an alternative embodiment of the previous figure.
- FIG. 1 shows a bogie 1 according to the invention, the longitudinal beam 3 of which is produced by the welded technique and thus has an I-shaped cross section, that is to say it comprises an upper sole 5 and a lower sole 7 which are connected by a core 9 which is welded to these two soles.
- Each of the ends of the longitudinal beams 3 is provided with a spring support 4 which is intended to ensure the maintenance of each of the ends of an axle 10 of the bogie, on which the wheels 12 thereof are mounted (shown in dotted lines in the drawing).
- the axle 10 is held at each of its ends in a spring support 4 by means of spring suspension means shown diagrammatically in dotted lines in the drawing.
- the spring support 4 consists of two spaced apart support elements 6 which are interconnected by a base 8.
- Such an assembly consists in positioning the upper part of the spring support 4 in contact with the lower flange 7 of the beam 3 and in fixing it by welding by forming a weld bead between the upper face of the support spring 4 and the bottom flange 7 of the beam 3.
- a in FIG. 1 corresponds to the place where the connection of the spring support 4 with the lower sole 7.
- the spring support 4 comprises an upper part which is provided with a sole 7a identical to the lower sole of the longitudinal beam 3.
- This sole 7a extends, in longitudinally, beyond the lower part of the spring support, towards the center of the bogie.
- the other side of the flange 7a can also be extended in the same manner.
- the longitudinal beam 3 is devoid of a bottom sole 7 in this zone so that its sole is formed by the sole 7a of the spring support 4.
- the present invention is therefore particularly interesting since it not only makes it possible to reduce the level of mechanical stresses which are exerted in a zone of vulnerability of the bogie, but it also makes it possible to simplify, in significant proportions, the welding operation.
- the spring support 4 can include not only a part 7a of the sole 7, but also a part 9a of the vertical core 9. It has thus been found that such an embodiment facilitated the production of the longitudinal weld bead intended to connect the spring support 4 to the beam 3 without, however, adversely affecting the mechanical strength of this assembly. .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Springs (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Telephone Function (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0113887 | 2001-10-26 | ||
FR0113887A FR2831507B1 (fr) | 2001-10-26 | 2001-10-26 | Appui ressorts pour boggie |
PCT/FR2002/003674 WO2003035446A1 (fr) | 2001-10-26 | 2002-10-25 | Appui ressorts pour boggie |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1444121A1 true EP1444121A1 (fr) | 2004-08-11 |
EP1444121B1 EP1444121B1 (fr) | 2006-12-13 |
Family
ID=8868771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02790543A Expired - Lifetime EP1444121B1 (fr) | 2001-10-26 | 2002-10-25 | Appui ressorts pour boggie |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1444121B1 (fr) |
AT (1) | ATE348031T1 (fr) |
DE (1) | DE60216805T2 (fr) |
FR (1) | FR2831507B1 (fr) |
WO (1) | WO2003035446A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MXPA06010136A (es) * | 2004-03-26 | 2007-03-07 | Contitech Luftfedersyst Gmbh | Carreton de ferrocarril. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5226369A (en) * | 1992-06-15 | 1993-07-13 | National Castings Inc. | Sideframe for a railroad car truck |
DE19506586C1 (de) * | 1995-02-24 | 1996-08-14 | Waggonfabrik Talbot Gmbh & Co | Tragkonstruktion, insbesondere Drehgestellrahmen und Verfahren zu deren Herstellung |
DE19925634A1 (de) * | 1999-06-04 | 2000-12-14 | Dwa Deutsche Waggonbau Gmbh | Fahrwerk für Schienenfahrzeuge |
-
2001
- 2001-10-26 FR FR0113887A patent/FR2831507B1/fr not_active Expired - Lifetime
-
2002
- 2002-10-25 EP EP02790543A patent/EP1444121B1/fr not_active Expired - Lifetime
- 2002-10-25 WO PCT/FR2002/003674 patent/WO2003035446A1/fr active IP Right Grant
- 2002-10-25 AT AT02790543T patent/ATE348031T1/de not_active IP Right Cessation
- 2002-10-25 DE DE60216805T patent/DE60216805T2/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03035446A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2831507A1 (fr) | 2003-05-02 |
DE60216805T2 (de) | 2007-11-08 |
EP1444121B1 (fr) | 2006-12-13 |
DE60216805D1 (de) | 2007-01-25 |
ATE348031T1 (de) | 2007-01-15 |
FR2831507B1 (fr) | 2004-10-29 |
WO2003035446A1 (fr) | 2003-05-01 |
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